Time-lock



S. SHAW. Time Look.

No. 233,443. Patnted Oct. 19,1880.

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UNrTED STATES PATENT OFFICE.

SUMNER SHAW, 0F BOSTON, MASSACHUSETTS.

TIM E-LOCK.

SPECIFICATION forming part of Letters Patent No. 233,443, dated October 19, 1880.

Application filed January 7, 1880.

To all whom it may concern:

Be it known that I, SUMNER SHAW, a citizen ot' the United States, residing at Boston, in the county ot Sutl'olk and State otl Massachusetts, have invented certain new .and nse ful Improvements in Time-Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements on the patent granted to me on the 25th day ot' November, 1879, for time-locks forsafes, vaults, &c. and it consists, first, in combination with the attachment to the bolt-work of a combination or key lock and a rotary and notched disk, of a jointed locking-leverthat is movable on a fulcrum-pin, between which and its outer free end it is provided with a joint, by which arrangement the time mechanism that is used in connection therewith may be set in motion at any desired time previous to locking the door, and as soon as the door is locked the jointed end of the locking-lever will be automatically straightened out by the induence ot a spring, so as to occupy a place in the rear of the attachment for the combination or key lock, in which position the door cannot be openedt'rom without until the inner end of the lever drops into the desired notch on the rotary notch-wheel for which the lock is set, and the said rotary notch-Wheel is slowly rotated around its axis by means of the usual time or clock mechanism.

My invention further consists of a rotary notch-wheel actuated by time mechanism and provided on its circumference with a number of sliding blocks, in combination with a central lock-wheel provided with one single notch or recess, into which either of the slidingblocks on the notch-wheel can be inserted simply by sliding such block into said single notch, thus leaving thecorresponding notch on the rotary notch-wheel open, so that the inner end of the rocking lever may drop into such open notch when the latter, during the rotation of the notch-wheel, comes to the location of the inner end of said lever, the latter at this moment being actuated by a suitable spring to rock on its 'ulcrum, by which its outer end is disen gaged from the attachment to the bolt-work for the combination or key lock, so that the safe or vault door may be opened when the notch-wheel and the rocking lever are in these their respective positions. By having a number of notches on the rotary notch-wheel the latter may, of course, be adjusted, in connection with the central lock-wheel, so as to allow Ythe safe to be opened at any desired hour, as may be previously arranged and agreed upon.

A suitable spring or fastening device is made on the central lock-wheel for the purpose of retaining the block that is moved in its proper position during the rotation ot' the notch-wheel and lock-wheel.

0n the accompanying drawings, Figure 1 represents va front elevation of my invention. Fig. 2 represents a bottom view, seen from X in Fig. l; and Fig. 3 represents a cross-section on the line A B, shown in Fig. 1.

Similar letters refer to similar parts wherever they occur on the different parts of the drawings.

The letter a indicates the frame; b, the sliding bolt-work; b. the key or combination lock; b", an arm projecting from the sliding bolt ot the key or combination lock. c c is the locking-lever, that is movable on its fulcrum d, as shown, its outer end, c', being jointed to its inner end, c, by the hinge-pin c, as and for the purpose described. 0" is a spring on the said jointed lever for the purpose of automatically lowering the outer jointed end, c', to the position shown in dotted lines in Fig. 1 as soon as the bolt-work bis moved to its locking position and the arm b of the sliding bolt of the key or combination lock b is moved forward, as represented in dotted lines.

e is a spring, as usual, for automatically forcing the inner end of the lever cinto any desired notch on the rotary notch-wheel f, on whichf'ff"f"are the notches, as and for the purpose described.

g g g represent the sliding blocks on the notch-wheel f, and h represents the single notch on the adjustable lock-wheel h. t is the IOO fastening device 011 the 1ockwheel h for the purpose of holding any desired sliding block in position when locked into the notch h' on the lock-wheel h, as shown at g in Fig. 1, so as to leave its corresponding notch f on the' notch-wheelf open, as shown in Fig. 1, to allow the inner end of the lever c to drop into it when said open notch reaches the position where the projecting lips civ of the lever c is 1o located, for the purpose as specified.

The sliding blocks y g are shown in the drawings as placed in their outer positions within the notchesf"f"", by which the outer periphery of the rotary notch-wheelf is made to present a perfectly smooth and circular shape at these locations, to permit them to pass unobstructed by the lip civ of the lever c.

k is the stationary' axis common to both the notch-wheel fand lock-wheel It, and l is the 2o gear-wheel attached to the notch-wheelf.

m m' represent a pair of drivin g-wheels, each one to be driven by an independent time or clock mechanism, in the usual manner, (which time or clock mechanisms are, however, not

shown in the drawings.) n n are the ratchetwheels, one on each of their respective drivers m m. M M' are the shafts, to which each of the drivers m m are attached, as shown. o o are the loose pinions, each one loosely 3o journaled to its respective shaft M or M', as shown. A ratchet, p, is attached to the loose pinion o to engage with the ratchet n on the wheel m, and p is asimilar ratchet on the pinion o', that engages with the ratchet n on the driver m', as and for the purpose set forth. q is a yielding spring on the shaft M, to hold the ratchet p in contact with the ratchet n ou the driver m when the latter is moved by its time or clock mechanism, and to allow the said ratchet p to rise and disengage itself from the 4o ratchet n when setting the notch-wheel f to any desired position previous to closing the safe or vault, or in case the driver m should by any accident cease to act on the pinion 0.

q is a similar spring, for a similar purpose, located on the shaft M', as shown.

The letter r indicates the central gear-wheel, into which both of the loose pinions o o are geared, and r indicates the shaft of the gearwheel r, and s is a pinion on the end of shaft 5o r', which meshes with the gearwheel l, attached to the notched wheelf.

Having thus fully described the nature, construction, and operation of my invention, I wish to secure by Letters Patent, and claim- 1. In a time-lock for safes, the combination. with the rotary notch-wheelf, of the sectional jointed spring locking-lever c c', the sliding bolt-work b, the key or combination lock b', and arm b, the whole constructed and arranged 6o substantially as and for the purpose described.

2. In a time mechanism for safes, vaults, &c., the herein-descri bed rotary notch-wheel f, with its notchesff"f"f"" and sliding blocks q g' g', the adjustable central lock-Wheel, h, with 65 its single notch h', and fastening device t', combined and arranged as and for the purpose set forth.

In testimony whereof I have affixed my signature in presence ot' two witnesses.

SUMNER SHAW.

Witnesses:

ALBAN ANDRN, HENRY CHADBOURN. 

